Improvement in buffing-cylinders for boots and shoes



l. H. WEBSTER. Bung-Cylinders for Boots and Shoes.

Patented Feb.17 1874.

In verdor UNITED i STATES PATENT EEIGE JOHN H. VEBSTER, OF BOSTON,MASSACHUSETTS.

IMPROVEMENT lN BUFFNG-CVLINDERS FOR BOOTS AND SHOES.

Specification forming part of Letters Patent No. 147,534, dated February17, 1874; application filed December l5, 1873.

To a-ZZ whom it lmay concern Be it known that I, JOHN II. WEBSTER, otBoston, in the county of Suffolk and State of Massachusetts, haveinvented certain new and useful Improvements in Cylinders for Butin gthe Soles of Boots and Shoes, and sandpa pering wood or othersubstances, of which the following, taken in connection with theaccompanying drawing, is a specification:

My invention relates to the construction of a cylinder, to be coveredwith sand-paper, cinery-cloth, or other abrading material, and to themanner of securing said paper or cloth to the cylinder; and it consists,iirst, in the use of a hollow cylinder, provided wit-l1 a narrow slitupon one side thereof, parallel to the axis, and extendinglongitudinally thereof, through which thc ends of the sheet ofsand-paper or emery-cloth are passed tothe interior of the cylinder, andsuitable griping and straining mechanism arranged within said hollowcylinder, in such-a manner as to seize and draw in the ends of the sheetof sand-paper or einerycloth. My invention further consists in the use,in a sandpapcring, bufling, or pol ishing machine, of a hollow cylinder,made preferably of metal, and provided with a narrow slit through itsshell, and extending longitudinally thereof parallel to its axis, and apair of yielding pressure-rolls mounted in suitable bearings within saidcylinder, in a posi tion in close proximity to said slit, and parallelthereto, and arranged to be rotated toward each other, for the purposeof seizing the two ends of the sheet of sand-paper or cmery-cloth asthey are passed through said slit after it has been wrapped around.thecylinder, and, by drawing the said ends into the interior of thecylinder, st 'ain the sheet of sand-paper or emery-cloth tightly uponthe surface of the cylinder, and hold it irmly in position. My inventionfurther consists in a peculiar arrange ment of gearing for operating theinternal mechanism by which the sand-paper or emcrycloth is secured tothe cylinder, whereby said internal mechanism maybe operated from theexterior of said cylinder without projecting any of said parts beyondthe surface of said cylinder, as will be more fully described. Myinvention further consists in the combination, with a hollow cylinderprovided with a longitudinal slit in its side, a covering of sand-paperor emery-cloth secured thereto by mechanism contained within saidcylinder, of an elastic covering for said cylinder, interposed betweenits surface and the enveloping sandpaper or emery-cloth, and secured tosaid cylinder, as will be hereafter described.

In the drawings, Figure l is a sectional elevation of a cylinderembodying my invention, a portion of the cylinder and its covering beingbroken away to show the draft-rolls. Fig. 2 is a longitudinal section online v c on Fig. l. Fig. 3 is a transverse section on line ic w on Fig.l. Fig. et is a transverse section on line .fr .r on Figs. l and 2. Fig.5 is a transverse section on line y y on Figs. l and 2. Fig. 6 is asection on line z 2' on Fig'. 5, with binding-nut removed. Fi 7 is anend view, with binding-nut removed; and Fig. 8 is an enlarged section ofa portion of the cylinder, taken transversely thereof, and showing themanner of securing the edges of thc felt or other elastic covering.

A is a cast-ing in the forni of a semi-cylinder, having the heads A l A2and one or more exterior ribs, (l, cast therewith. B B are two smallshafts, mounted in bearings in the heads A1 and A?, and may be providedwith one or more intermediate bearings, if desired, as seen at c. Thebearing or bearings c are designed to prevent the shafts B l5 fromspringing apart between the bearings Al and A, and, inthe manufacture oflong rolls, become very essential, as the shafts B B are necessarily ofsmall dia-meter, and if made long, without interlnediate bearing orback-rests,would be liable to spring, and allow the sandpaper to drawout. The shafts B are covered, between their sev eral bearings, withrubber rolls, C U, arranged to roll in contact with each other, and saidshafts project through the head A2, and are geared together by`nieans ofthe pinions I) I), secured to their outer ends. Dis a tube of thinmetal, fitted. and secured to the exterior of the heads A and A2, andprovided with the narrow slit c, extending loiigitudinally thereof andparallel to the axis of the cylinder, and arranged, relative to thedraft-rolls C O, so that a radial line drawn from the axis of thecylinder through the point of contact of said rolls will pass throughthe center of said slit.

' prong upo'n each side of the wire i.

E is a casing itted to the head A2, and secured thereto by the screws dd, and provided with the long hub E', which is made slightly tapering,and threaded, as shown, to receive the binding-nut F. The hub E is splitinto several parts by the slits c e, so that, by screwing the nut F ontosaid taper hub, it will be compressed and made to nip the shaft G. Thecasing E incloses the pinions b b, as shown, and is providedwith the hubf, formed upon its inner surface, and in which is formed abearing forthe stem of the worm g, as shown in Figs. 5 and 6. rEhe worm g meshesinto and acts upon one of the pinions b, and its axis is placed at suchan angle to the axis of the pinion that its threads upon the side towardthe pinion shall be parallel to the teeth and axis of said pinion, andwork smoothly therein. The outer end of the stem of the worin g issquared to receive a key, by which it may be revolved, and a recess, h,is formed in the outer surface of the casing E, surrounding said stem,to admit ofv the application of the key thereto without projecting` saidstem beyond the periphery of said casing, it being very desirable tomake the outer surface of the cylinder, in all its parts, as free fromprojections as possible, to guard against accident by entangling theoperators clothing when running at a high rate of speed. II is acovering of felt, rubber, or other suitable elastic material, wrappedaround said cylinder from one side of the slit c to the other, the twoends or edges coming nearly in contact, but sufficiently far apart toadmit of the insertion ofthe two ends ofthe sheet of sand-paper betweenthe same, as seen in Figs. 3 and 4i. A wire, 17, is passedlongitudinally through the felt H, near and parallel to cach edge, andto the slit c in the shell of the cylinder, and a series of small wirestaples,j, are passed through holes provided for the purpose in theshell I) of the cylinder, and piercing the felt H', one y The two prongsare twisted together and hammered down into the felt or other elasticsubstance of which the cushion or covering II is made. J' is a sheet ofsandpaper or emery Y cloth wrapped around the cylinder and resting uponthe surface of the cushion II, and having its two edges bent so as tobring the two sanded surfaces together, and then passed between theedges of the cushion H, and through the slit e in the shell of thecylinder7 until they strike the two rolls C G near their points ofcontact, when, by applying the key to the squared end of the stem of theworm g, and revolving the same, said rolls will be made to revolvetoward each other and toward the axis of the cylinder, and, griping thetwo ends of the sand-paper or emery-cloth thus presented between them,will cause the same to be drawn into the interior of the cylinder untilthe sand paper or einerycloth covering is made to fit closely thesurface of the `elastic cushion H, where it will be held firmly in placeuntil it is desirable to remove the same, which may be readily done bysimply reversing the motion of the rolls C.

It is obvious that the internal mechanism may be varied withoutmaterially affecting the principle of operation-as, for instance, one ofthe rolls C may be dispensed with, and a fixed curved bar substitutedtherefor.

WVhat I claim as new, and desire to secure by Letters Patent of theUnited States, is-

l. In combination with a hollow cylinder provided with the slit c, theyielding draftrolls O U, arranged to gripe and strain the sheet ofsand-paper or other abrading material, substantially as described.

2. In combination with a hollow cylinder provided with a narrowlongitudinal slit, c, and having mounted therein a pair of yieldingdraft-rolls, C C, for securing to the exterior of said roll a coveringof sand-paper or other abrading material, one or more bearings orback-rests, a', arranged between the end bearings of said rolls,substantially as described.

3. In combination with a hollow cylinder provided with the slit c, andthe yielding dra'ftrolls G C, geared together by the pinions b b, theworin g, arranged at such an angle to the axis of the cylinder that itsthread at the point of contact with the pinion shall be parallel to theaxis of said pinion, and to its teeth, substantially as described.

4. The combination of a hollow cylinder, provided with the narrowlongitudinal slit c through its shell, an elastic cushion of felt orother suitable material, a sheet of sand-paper 0r other abrading'material wrapped around said cylinder and cushion, and the yieldingdraft-rolls C G, mounted in suitable bearings within said cylinder, andarranged to seize the edges of said sandpaper and `strain the samearound the cylinder, substantially as described.

5. In combination with a hollow cylinder provided with a narrowlongitudinal slit, c, an elastic cushion enveloping said cylinder, andhaving its contiguous edges'secured thereto, upon either side of theslit c, by means of the wires t' t', passed through said cushionparallel to its edges and the slit c, and the staples j j, passingthrough holes in the tube D, and through the cushion, with one prongupon either side of the wire fi, and having their prongs securedtogether, substantially as described.

Executed at vBoston this 11th day of cember, 1873.

JOHN H. WEBSTER.

litnesses WM. I). EnwAnns, S. A.Woon.

